JacksonInject

```
@Target({ANNOTATION_TYPE,METHOD,FIELD,PARAMETER})
@Retention(RUNTIME)
public @interface JacksonInject
```
Jackson-specific annotation used for indicating that value of annotated property will be "injected", i.e. set based on value configured by ObjectMapper (usually on per-call basis). Usually property is not deserialized from JSON, although it is possible to have injected value as default and still allow optional override from JSON.

Optional Element Summary

Optional Elements
Modifier and Type	Optional Element	Description
`OptBoolean`	`optional`	Whether to throw an exception when the `ObjectMapper` does not find the value to inject.
`OptBoolean`	`useInput`	Whether matching value from input (if any) is used for annotated property or not; if disabled (`OptBoolean.FALSE`), input value (if any) will be ignored; otherwise it will override injected value.
`java.lang.String`	`value`	Logical id of the value to inject; if not specified (or specified as empty String), will use id based on declared type of property.

- Element Detail
  - value
```
java.lang.String value
```
    Logical id of the value to inject; if not specified (or specified as empty String), will use id based on declared type of property.
    
    Returns:
    
    Logical id of the value to inject
    
    Default:
    
    ""
- - useInput
```
OptBoolean useInput
```
    Whether matching value from input (if any) is used for annotated property or not; if disabled (`OptBoolean.FALSE`), input value (if any) will be ignored; otherwise it will override injected value.
    Default is `OptBoolean.DEFAULT`, which translates to `OptBoolean.TRUE`.
    
    Returns:
    
    OptBoolean.TRUE to enable use of value from input instead of injected value, if available; OptBoolean.FALSE if injected value will always be used regardless of input.
    
    Default:
    
    com.fasterxml.jackson.annotation.OptBoolean.DEFAULT
- - optional
```
OptBoolean optional
```
    Whether to throw an exception when the ObjectMapper does not find the value to inject.
    Default is OptBoolean.DEFAULT for backwards-compatibility: in this case ObjectMapper defaults are used (which in turn are same as {code OptBoolean.FALSE}).
    
    Returns:
    
    OptBoolean.FALSE to throw an exception; OptBoolean.TRUE to avoid throwing it; or OptBoolean.DEFAULT to use configure defaults (which are same as OptBoolean.FALSE for Jackson 2.x)
    
    Default:
    
    com.fasterxml.jackson.annotation.OptBoolean.DEFAULT